<!DOCTYPE html>
<html lang="en">

	<head>
		<meta charset="UTF-8">
		<title>待办事项</title>
		<link rel="stylesheet" href="https://cdn.bootcss.com/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
		<link rel="stylesheet" href="css/style.css">
	</head>

	<body>
		<div class="jumbotron jumbotron-fluid">
			<div class="container text-center">
				<h1 class="display-4">JavaScript todo</h1>
				<p class="lead">待办事项</p>
			</div>
		</div>
		<div class="container">
			<form class="mb-5" action="" onsubmit="return false">
				<div class="form-group">
					<input id="ipt" type="text" class="form-control" placeholder="再次输入任务">
				</div>
				<button id="btn" type="submit" class="btn btn-primary btn-block">添加</button>
			</form>
			<ul class="list-group" id="ul"></ul>
		</div>
		<script src="js/script.js"></script>
	</body>

</html>